154 COCHLOSTYLA-CALOCOCHLEA. 



straightened, sloping, wide, whitish. Aperture oblique, subtetra- 

 gonal-lunar, white inside ; peristome somewhat thickened, a trifle 

 expanded, brown-edged. (Pfr.) 



Alt. 27, greater diam. 37, lesser 33 mill. 



Naujan, Mindoro. 



H. solida PFR., P. Z. S. 1851 ; Monogr. iii, p. 187. #. sphcerion 

 PFR., Conchyl. Cab. t. 42, f. 5, 6 (not description). REEVE, Conch. 

 Icon. f. 114. 



C. SPH^RION Sowerby. PI. 31, figs. 34, 35. 



Shell globose-orbicular, thin, smooth, unicolored, scarcely shining ; 

 spire short, little elevated ; whorls 4, ventricose ; sculptured with 

 delicate growth-lines only ; last whorl large, much larger than the 

 others ; suture a distinct white line ; aperture rounded, little modi- 

 fied by the last whorl, inside whitish ; outer lip brown, a little re- 

 flexed in front ; columellar lip white, rather widened, deeply in- 

 serted. (Sowb.~) Alt. 1-3, diam. 1-6 inch. (Sowb.') 



Tanauan, Island of Leyte, Philippines. 



H. sphcerion SOWB., P. Z. S. 1841, p. 2. PFR., Conchyl. Cab. t. 

 150, f. 5, 6 (not /. c., t. 42, f. 5, 6). H. intincta SHUTTLW., Bern. 

 Mittheil., Aug. 1852, p. 196. Cochlostyla sphcerion SEMPER, Reis. 

 p. 184. HIDALGO, Journ. de Conchyl. 1887, p. 127. 



I have not seen the typical form of this species. Sowerby's ori- 

 ginal description is given above. As varieties the following forms 

 have been described. , 



Var. INTINCTA Shuttlw. PL 31, figs. 31, 32, 33. 



Buff above, chestnut-brown below the periphery; a dark streak 

 behind the peristome; lip but slightly expanded, brown ; columella 

 white, wide, slightly concave, flattened and somewhat excavated. 

 Alt. 30, diam. 32 mill. 



This is the only form of C. sphcerion I have seen. The. coloring 

 and scarcely expanded lip, as well as the rather thin texture, re- 

 mind one of C. dimera. Like that shell, it shows no spiral stride 

 when examined under a lens. This is the H. sphcerion of Philippi 

 (Abbild. iii, p. 54, Helix t. 10, f. 2) and of Reeve (Conch. Icon. f. 

 Ilia). 



VAR. Form as in the last, but unicolored dark brown all over ; 

 suture with a light line. Reeve's figure lllb represents this color- 

 pattern. 



